Aside from SharePoint, options include well known software such as:
These platforms all have their own advantages and have been developed to excel in specific areas such as content management or reporting, and have some integration with most software, however one area where they fall down is in their integration with Microsoft Office.
As the pre-eminent productivity suite, Microsoft Office and Office 365 are used by most workers to create and manage content. The relationship between SharePoint and Office is a massive benefit and avoids the need to adopt complex workarounds that can undermine adoption.
SharePoint shares a common interface with other Microsoft products, meaning that there is no steep learning curve for the platform, and thanks to compatibility with Teams, it is well suited to modern remote working needs as well as traditional workplaces.